Device for shaping grinding-wheels.



LIIIQAQLL A. WHITE.

DEVICE FOR SHAPING GRINDING WHEELS.

APPLICATION FILED MAY 12, 1913.

Patented Sept. 29, I914.

I mam/ UNITEDSTATES PATENT OFFICE; Ami-Homo wHIr or'wcncssrnn, nnssacmrsmrs, Assumes 'ro inoaronienmn: 1 me conran r, a conrona'rxon or mssacnnsa'rrsg I I nnvrcn ron- SHAPI NG ,enmnme-wnnnns.

To-all whohiitmay concern: 4 Be it known that I, ALPHoNzo WHITE, a

citizen of the United States, residing at lVorcester, in the county .cf Worcester and State of Massachusetts, have invented a new and useful Device for Shaping Grinding- VVhee1s,'of which the following is a specification. 1

This, invention relates to an attachment tobe used with surface grinding machines.

for shaping"the cutting surfaces of 'the grinding-wheels thereofto any desired'form,

' asfor' example, concave, convex, beveledand.

- the like.

be attached to the work table of the grinding machine in a simple way and will workingdrawings in which.

.piece '17. The plate 14:

thereon-withoutnecessitating the modifica,-. I

table A, being, kept in stationary position,

tion of the grinding machine itself in any willy- The invention also involves lmprovements in details of construction and combination of parts as will appear hereinafter. 1

- Reference is to be had to the accompany Figur 1 is atfarisvers sectional View of the: wo'rlg suppdrtingdt'able of asnrface grinding machine showing a preferred. em-

bodiment" Off-thiSlHVGhtlOIL, thereon in e le-. vation; Fig! 2 is' a'-plan of the same with the grinding wheeland guard removed; and

- Fig.-3.is.a sectional'view on theline 3 -3 of-.

Fig. 2.:

The attachment is shown as comprising a base 10 which-is designed to be securedby T-bolts 11 or in any other desired way to the table A of thegrinding machine. This base is provided with two upright arms 12 atone end carrying a pair of studs .13.

. is to be performed, and on the-bottom of this" holder is located a hardened steel bearing upon under certain circumstances tb 'be moved toward the base 10 by gravity, but I prefer to use a spring-pressed !0'd-18"'for 1 keeping the plate down under all circumstances. II I On the base'lO are ways 20 on which is a surface 27 which initself constitutes the .gmdmg means for the hardened steel piece. 17 which rests upon-1e;

objects of the invention are I I to provide a simple, compact and efi'ective; shaping device or. this'characterwhich can 'iwhe'e l.v This; constitutes a :On these, -is pivotally mounted a plate 14', movable can be depended;

Specification o f Letters Iiatcnt. lPatented S t. 29 .1914. I i Application filed lllay 12,1913. Serial'No.-766,993. J i

I ju stable arm'22'-wh'ich is capable of being moved longitudinally-of theslideand secured adjusted position'bybclts 23 or the like. 1 This armis-pr'ovided with-a slot a t theend for receiving a screw/'24, orthe like adapted to be secured to" the end of an mterchangeable' -templet or form. 25;- which moves on a'stationarysupport 26 of herdenedsteel. This form25 is provided with Extending out from the side of: the slide 21 is an ear 28- havingla perforation 29.r

This receives a Pin 30 secured on the end-of anarin= 31 pro ecting :iroin-a bracket 7 -32. Thisbracket is seeuredito the gu'ard'B of;- the grinding wheel Cg byf screws 33* or anyother desired w'ay.' a The d eration of the device is very simple 7'5 understood, ofpotirse, that" the the wheel and its guardand shaft D can-be moved backand forthas indi ated bythe arrow-in Fi'g. y1.' This can-be") one by hand .diamondpoint, lGifollows absolutely-the surfacer27; and cuts the gurface of-the grind- 55 ingwheel toithe same sha e in cross section; 4 I The former-.25 positively olds the diamond point proper I'posit'ion' at all points -and'-= necessitates ,,the f accurate .1.-,eutting' of the. v

I I I I very. slm pl ai'i-i-fio range'mfent for. cutting dqwn gri-ndingwheels .to any des redfi'profile -iandibis-operated in; ,j

avery sirr'lple'..andexpeditious, man wrs. Moreover, jif there is any part, the wheel; which requires"'inoreycutt ng-than' another thebperat'or has this entiely within his c n as he mm rqi ba-wh s b eki n rel-r11 longitudimilly of-itbe sli niond point untrfhefgets no cutting action at any point alon the surface or the'wl'ieel. The cutting operation is true and accurate under all'circumstan'ces; as the spring on the rod 18 keeps the bearing piece 17 always in contact with-the'teniplet.

I I aft i 'n anydesi'red way, :he leavesthewyhelelrlonger in, 4

' claims. Therefore, 'I do not wish'to belim ited in these respects, but

What I do claim 1. The combination with a grinding machinehaving an axially recjp'rocable rotatable wheel, and a work table, of means fifor shaping said wheel comprisilig-afplate' between the wheel and table; means? carried by said plate for-shaping the jwliee l it rotates, and means movable 'aniallg with the wheel for moving said plate an shaping means positively toward the wheel. 1 v

2. In an attachment for grinding muchines, the combination with a base adapted to be applied to the work table of a grind- 1 machine, of a support for a diamond point located oversaid base, and moi able toward and from the. base, and means inovable axially with the grinding wheel-to be operated upon, H and located between isaid base and support, .for controlling the "posi; tion of the diamond point; with nspect to the axis of. the wheel.

3. In an attachmentfor chines-the combination of a base adapted to be attached to the 'workztable of agrinding machine, of a plate movably connected with V said base, a support on said plate for a to be secured to the work table oithe rind-- ing machine transversely thereof an diamond point or other cutting tool, aslide movable along said-base, means for moving said slide with the wheel to be cut, and means movable with saidslide for controlling the axis of the grinding wheel.

4. In an attachment for a grinding ma chine, the combination withla base ada ted arallel with the-grinding wheel"sliaft, p platebetween -said base and the grinding wheel shaft pivoted to one end of said base on an axis parallel with the surface of the work table, a cuttingntool support on saidplate, and a 'member'slidable along said and under said support for engaging said as'e parallel with. the grinding wheel shaft the distance of the .diamondpoint from;

of a

support during its sliding motion and con trolling the pivotal. motion of said plate. -5. In an attachment for grinding machines, the. combination of a base ada ted to be seeuredto the work table of a grin ingl machine, plate pivoted to said base at one end thereof and extendin over the 1 base,-"a supportqn the top of sa1d plate for said base under the late and support and having a master sur ace engaging the bot- E tom of said cutting tool support.

6. In an attachment for grinding ma; chines, the combination of a base adapted to J0 be' secured to the work table of a machine, a plate mounted over said ase andmovable up and down thereon, a support on said plate for aeutting tool, a member slidable along saidbase "under said support and having a master surface engaging the bottom of said cutting tool support, and a spring carried. by said base for holding the cutting tool support down against said mastersurace.

7. In a device for shaping grinding wheels, the combination'with the guard for a grinding wheel movable therewith of a base adapted to be secured to the work table of a grinding machine, a slide movable. along said-base, a templet supported on said base and movable therealong with the slide, movable means connected with said basefor supporting a cutting tool against said temcomprising a bracket connected with said guard and movable therewith.

8. The combination. with 'a grinding machine, having a work table, a grinding wheel .shaft, a grinding wheel, and a guard for the grinding wheel movable along with the grinding Wheel, of'an arm projecting from "said guard and movable therewith, a base :secui'ed to said work table, a slide on the base with and having a templet connected therewith, and a cutting tool support mo'vably connected with; saidybase in position to be operated by said templet as the slide movesalong'the base.

Intestimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses. 5.

1 l ALPHONZO WHITE. Witnesses:

CHARLa-s H. NORTON, "ALBERT TURNER.

a cuttingtool, and a member slidable along 65 grinding plet, and means for-reciprocating said slide 90 connected with said arm and movable there- 

